Table 1 The assessment of postural indexes.

From: A feasibility study of applying two-dimensional photogrammetry for screening and monitoring of patients with adolescent idiopathic scoliosis in clinical practice

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Postural landmarks

Postural indexes

Anatomic landmarks

Posterior

(1) C7

1) C7 deviation

(1) Distance between C7 and virtual plumb line across the gluteal cleft (red area)26

(2) Bilateral posterior angle  of acromial process

(2) Shoulder alignment

(2) Angle between the line connecting the bilateral posterior angle of acromion processes and the horizontal reference line (orange area)14

(3) Bilateral inferior angle of scapula

(3) Scapula alignment

(3) Angle between the lines connecting the bilateral inferior angle of scapula and the horizontal line (yellow area)14

 

(4) Waist angle discrepancy*

(4) Difference between the right and left sides’ angles between the line from the axilla to the deepest waist crease and the line from the deepest waist crease to the intersection of the virtual horizontal line of the PSIS and the waist (green area)13

(4) Bilateral PSIS

(5) PSIS alignment

(5) Angle between the line connecting both PSIS and the horizontal line (blue area)14

  1. C7 the 7th cervical vertebra; PSIS posterior superior iliac spines.
  2. *Waist discrepancy was the absolute value of the difference between the left and right waist angles.
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